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<div>Hi</div><div><br></div><div>I am not a good programmer but for my project i have to use llvm to generate CFG for c programs where i have a mapping from IR instruction in CFG to their respective c instruction. After surfing a in source of llvm i did the following change in printInstruction() function in llvm/lib/VMCore/AsmWriter.cpp file. </div><div>.....</div><div>void AssemblyWriter::printInstruction(const Instruction &I) {</div><div> if (AnnotationWriter) AnnotationWriter->emitInstructionAnnot(&I, Out);</div><div><br></div><div> // Print out indentation for an instruction.</div><div> Out << " ";</div><div> if (MDNode *N = I.getMetadata("dbg")) { <span class="Apple-tab-span" style="white-space:pre"> </span>// Code</div><div> DILocation Loc(N); <span class="Apple-tab-span" style="white-space:pre"> </span>// inserted </div><div> unsigned Line = Loc.getLineNumber();<span class="Apple-tab-span" style="white-space:pre"> </span>// by </div><div> Out<<"LN@"<<Line;<span class="Apple-tab-span" style="white-space:pre"> </span>// me</div><div> StringRef File = Loc.getFilename();<span class="Apple-tab-span" style="white-space:pre"> </span>// to </div><div> Out<<"FN@"<<File;<span class="Apple-tab-span" style="white-space:pre"> </span>// get </div><div> StringRef Dir = Loc.getDirectory();<span class="Apple-tab-span" style="white-space:pre"> </span>// the</div><div> Out<<"DN@"<<Dir;<span class="Apple-tab-span" style="white-space:pre"> </span>// mapping</div><div> }<span class="Apple-tab-span" style="white-space:pre"> </span>//</div><div><br></div><div> // Print out name if it exists...</div><div>.....</div><div>Code compiles well but i get following linking problem :(</div><div>llvm[2]: Linking Debug+Asserts executable llvm-as</div><div>/home/rangi/llvm/build/Debug+Asserts/lib/libLLVMCore.a(AsmWriter.o): In function `llvm::DIDescriptor::getUnsignedField(unsigned int) const':</div><div>/home/rangi/llvm/include/llvm/Analysis/DebugInfo.h:70: undefined reference to `llvm::DIDescriptor::getUInt64Field(unsigned int) const'</div><div>/home/rangi/llvm/build/Debug+Asserts/lib/libLLVMCore.a(AsmWriter.o): In function `DIScope':</div><div>/home/rangi/llvm/include/llvm/Analysis/DebugInfo.h:160: undefined reference to `vtable for llvm::DIScope'</div><div>/home/rangi/llvm/build/Debug+Asserts/lib/libLLVMCore.a(AsmWriter.o): In function `~DIScope':</div><div>/home/rangi/llvm/include/llvm/Analysis/DebugInfo.h:161: undefined reference to `vtable for llvm::DIScope'</div><div>/home/rangi/llvm/build/Debug+Asserts/lib/libLLVMCore.a(AsmWriter.o): In function `llvm::DILocation::getFilename() const':</div><div>/home/rangi/llvm/include/llvm/Analysis/DebugInfo.h:785: undefined reference to `llvm::DIScope::getFilename() const'</div><div>/home/rangi/llvm/build/Debug+Asserts/lib/libLLVMCore.a(AsmWriter.o): In function `llvm::DILocation::getDirectory() const':</div><div>/home/rangi/llvm/include/llvm/Analysis/DebugInfo.h:786: undefined reference to `llvm::DIScope::getDirectory() const'</div><div>/home/rangi/llvm/build/Debug+Asserts/lib/libLLVMCore.a(AsmWriter.o): In function `llvm::DIScope llvm::DIDescriptor::getFieldAs<llvm::DIScope>(unsigned int) const':</div><div>/home/rangi/llvm/include/llvm/Analysis/DebugInfo.h:77: undefined reference to `llvm::DIDescriptor::getDescriptorField(unsigned int) const'</div><div><br></div><div>Plese tell me if what is missing and if this the right way to achive mapping.</div><div>Thanks in advance </div><div>Patreek</div> </div></body>
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